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首页> 外文期刊>Applied Mechanics and Engineering >FREE VIBRATION OF ISOTROPIC THICK/THIN PLATES USING A SUB-PARAMETRIC SHEAR DEFORMABLE ELEMENT
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FREE VIBRATION OF ISOTROPIC THICK/THIN PLATES USING A SUB-PARAMETRIC SHEAR DEFORMABLE ELEMENT

机译:使用亚参数剪切可变形元素自由振动各向同性的厚板

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摘要

A free vibration analysis of isotropic plates is investigated in this paper. A sixteen node sub-parametric element having thirty-six degrees of freedom is developed for this purpose. The transverse displacement and bending rotations are taken as independent field variables. The polynomials used to express these variables are of the same order. The entire formulation is made based on the first-order shear deformation theory (FSDT). The rotary inertia is included in the consistent mass matrix for the analysis. Isotropic plates with different thickness ratios, aspect ratios and boundary conditions are analyzed. The results show an excellent agreement with the available published analytical results.
机译:本文研究了各向同性板的自由振动分析。为此目的,开发了具有36个自由度的16个节点子参数元素。横向位移和弯曲旋转被视为独立的场变量。用于表示这些变量的多项式具有相同的顺序。整个公式是基于一阶剪切变形理论(FSDT)制定的。旋转惯量包含在一致的质量矩阵中以进行分析。分析了具有不同厚度比,纵横比和边界条件的各向同性板。结果表明与已发表的分析结果极佳的一致性。

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